Validation of Web-based Multimedia Dietary Assessment Tools

基于网络的多媒体饮食评估工具的验证

• 批准号: 7253431
• 负责人: Lenore Arab
• 金额: $ 50.81万
• 依托单位: UNIVERSITY OF CALIFORNIA LOS ANGELES
• 依托单位国家: 美国
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-06-28 至 2010-12-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7253431
• 关键词: Adopted; Adult; African American; Age; Benzoic Acid; Benzoic Acids; Biological; Biological Markers; Biomarker of Dietary Intake; Blood; Carotenoids; Caucasians; Caucasoid Race; Communication; Communities; Complex; Computer Assisted; Computer Systems; Computer software; Consumption; Counseling; Data; Diet; Diet Habits; Dietary Assessment; Dietary Potassium; Dietary intake; Eating; Education; Energy Intake; Energy Metabolism; Epidemiologic Studies; Ethnic group; Feedback; Food; Frequencies; Funding; Goals; Gold; Hour; Image; Immune; Individual; Individual Differences; Intake; Internet; Interview; Label; Language; Measurement; Measures; Methods; Modeling; Multimedia; Nitrogen; Numbers; Nutrient; Nutritional; Online Systems; Patient Self-Report; Personal Computers; Persons; Physical activity; Population; Potassium; Proteins; Published Comment; Purpose; Questionnaires; Range; Recording of previous events; Records; Recovery; Reliance; Reproducibility; Request for Proposals; Research; Research Design; Research Personnel; Sampling; Scientist; Self-Administered; Standards of Weights and Measures; Structure; System; Techniques; Testing; Time; Tocopherols; Validation; Vitamin E; Water; alpha Tocopherol; base; cost; design; dietary supplements; fruits and vegetables; gamma-Tocopherol; instrument; nutrient blood level; nutrition; nutritional epidemiology; tool; urinary; validation studies

DESCRIPTION (provided by applicant): There is an increasing demand for low cost and accurate methods to measure dietary intake and physical activity in epidemiologic studies. This proposal requests funds to examine the precision of two new dietary assessment tool, the Computer-Assisted Self-Interview Diet History (CASI-DH), which is modeled after the strengths of the diet history, one of the strongest dietary assessment approaches and a fully automated multimedia 24 hour recall: DIETDAY. The CASI-DH is a web-based, self-interview approach that is meal-, audio-, and food picture-based; generates nutrient and food intake estimates; has an extensive component to assess dietary supplement use and provides feedback to help people adopt more healthful dietary habits. It differs in many significant ways from food frequency questionnaires in that it is fully quantitative, includes thousands of foods, is meal-based, and does not truncate foods or frequencies of consumption. The objective of the validation study proposed here is to test how accurately these new tools capture usual diet by comparing self-reported nutrient and food intakes obtained through the CASI-DH and using the DIETDAY to objective validation biomarkers in a sample of 150 African American and 150 Caucasian adults. Specifically, we aim to examine the validity of both instruments for intakes of nutrients (total energy, protein, and potassium), vegetables and fruits and supplement use by using doubly labeled water for total energy; 24-hour urinary nitrogen for protein; urinary potassium for dietary potassium; and blood levels of nutrients (carotenoids and tocopherols) for fruits, vegetables, and nutritional supplement use. A number of secondary aims will also be pursued, including validation of two physical activity questionnaires and two different accelerometry approaches to DLW. To study the reproducibility of the CASI-DH, DIETDAY and DLW, repeat measures will be conducted on a subset of 100 persons 6 months apart. Due to its low cost, the language independence of the system, and the reliance on images for accurate communication, the CASI-DH and DIETDAY present unique opportunities for epidemiologic research in various populations for assessment of complex dietary exposures. Successful validation of either the CASI-DH or the DIETDAY will represent important methodological advances in nutritional epidemiology. The study will also contribute to our confidence in these dietary and activity assessment instruments in multiracial populations.

描述（由申请人提供）：在流行病学研究中，越来越需要低成本和准确的方法来测量饮食摄入量和身体活动。本提案要求资金来检验两种新的饮食评估工具的准确性，即计算机辅助自我访谈饮食史（CASI-DH），它是基于饮食史的优势，最强的饮食评估方法之一和全自动多媒体24小时回忆：DIETDAY。CASI-DH是一种基于网络的自我访谈方法，以膳食、音频和食物图片为基础；估算营养和食物摄入量；有一个广泛的组成部分，以评估膳食补充剂的使用，并提供反馈，帮助人们采取更健康的饮食习惯。它与食物频率调查问卷在许多重要方面不同，因为它是完全定量的，包括数千种食物，以餐为基础，并且不截断食物或消费频率。本文提出的验证研究的目的是通过比较通过CASI-DH获得的自我报告的营养和食物摄入量，并使用DIETDAY客观验证150名非洲裔美国人和150名高加索成年人样本中的生物标志物，来测试这些新工具捕获日常饮食的准确性。具体来说，我们的目标是检验这两种工具在营养物质（总能量、蛋白质和钾）摄入量、蔬菜和水果以及通过使用双标签水来表示总能量的补充剂使用方面的有效性；24小时尿氮蛋白；尿钾为膳食钾；而血液中的营养成分（类胡萝卜素和生育酚）多用于水果、蔬菜的营养补充。一些次要目标也将被追求，包括验证两种身体活动问卷和两种不同的DLW加速测量方法。为了研究CASI-DH、DIETDAY和DLW的可重复性，将对每隔6个月的100人进行重复测量。由于成本低，系统语言独立，以及依赖图像进行准确交流，CASI-DH和DIETDAY为各种人群的流行病学研究提供了独特的机会，可以评估复杂的饮食暴露。CASI-DH或DIETDAY的成功验证将代表营养流行病学方法学上的重要进步。这项研究也将有助于我们对这些饮食和活动评估工具在多种族人群中的信心。